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SEO & Marketing Tools

Meta tags, previews, checkers and generators for search engines and social media. Free, private and instant — every tool runs in your browser.

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Meta Tag Generator

Build perfect title, description, robots and viewport meta tags for any page — with live length checks.

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Open Graph Generator

Create the Open Graph tags that control how your page looks when shared on Facebook, WhatsApp and LinkedIn.

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Twitter Card Generator

Generate Twitter (X) Card tags so your links expand into rich cards with images on X.

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Schema Markup Generator

Build JSON-LD structured data — Article, Product, Organization, WebSite and LocalBusiness — without writing code.

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UTM Link Builder

Add UTM campaign parameters to any URL so you can see exactly which posts, ads and emails bring visitors.

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Keyword Density Checker

Paste any text and see how often each word and phrase appears — count and percentage density.

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SERP Preview

See how your page will look in Google search results — and fix the title and description before you publish.

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Readability Scorer

Check how easy your writing is to read — Flesch Reading Ease, grade level, reading time and more.

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Robots.txt Generator

Create a correct robots.txt file — allow everything, block everything, or block exactly the folders you choose.

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Slug Generator

Turn any title into a clean, URL-safe slug — lowercase, hyphenated and stripped of special characters.

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Canonical Tag Generator

Generate rel=canonical link tags — one URL or a whole list at once — to end duplicate-content confusion.

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Hreflang Tag Generator

Build hreflang tags that tell Google which language and country version of a page to show each visitor.

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Social Media Image Sizes

Every platform's image sizes in one place — Facebook, Instagram, X, LinkedIn, YouTube, Pinterest and TikTok.

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Email Subject Line Tester

Score your subject line before you send — length, spam triggers, ALL CAPS, emojis and mobile cut-off checked live.

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Hashtag Generator

Turn one to three keywords into a ready-to-post set of hashtags for Instagram, TikTok, X and LinkedIn.

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Amazon FBA Calculator

Estimate Amazon FBA profit: referral, fulfillment, storage and other fees from your price, size and weight.

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Meta Description Generator

Write a Google-friendly meta description — keyword, offer and call to action, trimmed to 160 characters.

About our seo & marketing tools

Every tool in this category is free to use without an account, works on phones and computers, and processes your input locally in your browser — nothing is uploaded or stored. Results are calculated with published formulas and exact conversion factors, and each tool page shows the formula and a worked example so you can verify the maths yourself.